Yamaha YZ450FX 2021 Owner's Service Manual page 79

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No.
Item
• Clean.
• Inspect and adjust.
• Replace oil.
30 * Front fork leg(s)
• Replace oil seal.
• Clean and grease oil seals and
31
Protector guide
• Replace.
• Inspect and adjust.
• Grease pillow balls and bearings.
32 * Rear shock absorber
• Check for tightening torques.
• Adjust lever position and pedal
• Lubricate pivot point.
• Check brake disc surface.
• Check fluid level and leakage.
33 * Brake(s)
• Retighten brake disc bolts, caliper
• Replace pads.
• Replace brake fluid.
34 * Swingarm
• Inspect, lube and retighten.
• Inspect, lube and retighten.
Relay arm, connect-
35 *
ing rod
• Inspect free play and retighten.
36 * Steering head
• Clean and lube.
• Replace bearings.
• Inspect air pressure, wheel run-
• Retighten sprocket bolt.
37 * Tire, wheels
• Check the bearing.
• Replace bearings.
• Lubricate.
• Clean, lubricate, slack, alignment.
38 * Drive chain
• Replace.
39 * Drive chain guide
• Inspect wear.
Drive chain guide and
• Replace.
40 *
drive chain support
• Routing (Connection)
• Check and grease.
41
Cables
• Check throttle cables on the throt-
42
Levers
• Adjust clutch lever free play.
Routine
dust seals.
(After rain ride)
position.
bolts, master cylinder bolts and
union bolts.
(Check for tightening torques.)
(Check for tightening torques.)
(After rain ride)
out, tire wear and spoke loose-
ness.
tle body for dirt and wear.
MAINTENANCE INTERVALS
Every race
Every third
After
(about
race (about
break-in
2.5 hours)
7.5 hours)
Every one year
3-3
Every fifth
race (about
As required
12.5 hours)

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